US10548338B2 - Use of spent bleaching earth from edible oil processing in the formulation of salt and mineral feed blocks or pellets for livestock - Google Patents

Use of spent bleaching earth from edible oil processing in the formulation of salt and mineral feed blocks or pellets for livestock Download PDF

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US10548338B2
US10548338B2 US14/344,803 US201214344803A US10548338B2 US 10548338 B2 US10548338 B2 US 10548338B2 US 201214344803 A US201214344803 A US 201214344803A US 10548338 B2 US10548338 B2 US 10548338B2
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bleaching earth
spent bleaching
salt
mixture
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Norman J. Smallwood
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/40—Mineral licks, e.g. salt blocks
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/10—Organic substances
    • A23K20/174—Vitamins
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A23K20/22—Compounds of alkali metals
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A23K20/24—Compounds of alkaline earth metals, e.g. magnesium
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K20/00—Accessory food factors for animal feeding-stuffs
    • A23K20/20—Inorganic substances, e.g. oligoelements
    • A23K20/28—Silicates, e.g. perlites, zeolites or bentonites
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K40/00—Shaping or working-up of animal feeding-stuffs
    • A23K40/10—Shaping or working-up of animal feeding-stuffs by agglomeration; by granulation, e.g. making powders
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K40/00—Shaping or working-up of animal feeding-stuffs
    • A23K40/20—Shaping or working-up of animal feeding-stuffs by moulding, e.g. making cakes or briquettes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K40/00—Shaping or working-up of animal feeding-stuffs
    • A23K40/25—Shaping or working-up of animal feeding-stuffs by extrusion
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K50/00—Feeding-stuffs specially adapted for particular animals
    • A23K50/10—Feeding-stuffs specially adapted for particular animals for ruminants
    • B09B3/0025—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/87—Re-use of by-products of food processing for fodder production

Definitions

  • the present invention relates to the safe handling, disposal, and economic use of spent bleaching earth from edible oil processing by salt addition with the particular application of making animal feed compositions, including lick blocks and pellets for livestock nutrition.
  • Spent bleaching earth is a solid waste material generated as part of the refining process in the vegetable oil industry worldwide. A minimum of 112 million pounds of bleaching earth (clay) are used per year in the United States alone for edible vegetable oil processing.
  • a typical vegetable oil refining process involves pretreatment of crude vegetable oil with acid and/or caustic soda followed by bleaching and deodorization.
  • Bleaching is a process of adsorbing impurities. The most common adsorbent used for bleaching is the bleaching earth or clay. In edible oil refining, the bleaching process is generally considered to be of critical importance in determining the quality and stability of the final product.
  • bleaching was originally intended for the removal of coloring substances from the oil, it is now recognized that this process is responsible for the removal of a whole range of impurities. Besides decolorization, the most important purpose of this bleaching process is the removal of trace elements such as iron, copper, calcium, magnesium, nickel, and phosphorus, some of which are known to promote oxidation of the oil and to limit the storage stability of the oil if they are not removed.
  • the bleaching process is followed by deodorization, which is intended primarily for the removal of traces of constituents that cause flavors and odors.
  • the treated oil is separated from the bleaching earth by filtration.
  • the filter cake resulting from the removal of bleaching earth from the oil stream is commonly blown with steam.
  • oil retention of spent bleaching earth from edible oil processing ranges between about 30-50% entrained edible oil.
  • the edible oil has significant nutritional value for livestock.
  • At a 30% retention level about 33.6 million pounds per year of edible oil is lost in the spent clay. While the clay component is inert, it is not harmful for ingestion. This is reflected by the fact that clay is added to soybean protein meal as a flow agent for animal feed.
  • feed animals and particularly livestock feed supplements including lick blocks and pellets to improve nutrition and health.
  • animal growth and fertility is limited by the level of nutrients in the feed available for consumption. These concerns arise particularly in animals that graze pasture.
  • animal growth, health, and fertility can be improved by feeding animals nutritional supplements that are fortified with nutrients such as, lipids and minerals. Attempts to provide such nutrients in feed blocks or pellets have been common.
  • Typical types of feed blocks are salt blocks or salt licks, mineral blocks, protein blocks, and molasses blocks.
  • Lipids, salts, and minerals are particularly desirable in feed supplements; however, lipids have been difficult to incorporate. Lipids are often in liquid form or some form that exudes or sweats liquid oil and/or grease, particularly in warm temperatures. Thus, lipids can become rancid and decompose. This has greatly limited the manner in which lipids can be fed to animals and stored. Furthermore, when mixed with grains or other dry feed products, lipids not only risk going rancid but can also clump or agglomerate, and thereby disperse non-uniformly in typical feeding mechanisms. This results in packaging, handling, and rationing problems.
  • the United States cattle population is about 96.7 million animals.
  • the average intake of salt per head of cattle is about 20 pounds per year.
  • the average salt demand for cattle in the United States on an annual basis is about 1.9 billion pounds of salt.
  • feeding adequate levels of trace minerals has been shown to benefit the health status of cattle by improving the immune response and antioxidant status, thereby leading to better animal performance.
  • trace minerals that can be incorporated in animal feed for the improved health of the animals.
  • U.S. Patent application 2011/0021461 A1 describes combinations and formulations of various ingredients, including trace minerals, but is still limited by the requirement that the minerals be rationed and mixed into the animal feed. Thus, the labor, time requirements, and expenses associated with feed calculations, rationing, and mixing are not reduced.
  • Clays such as montmorillonite have previously been incorporated into poultry feed at levels as low as one percent of the animal ratio as in U.S. Pat. No. 3,687,680. Effects accompanying the addition of montmorillonite included increased growth rate and body weight of the chickens and reduced mortality rate. Attapulgite clay has also been incorporated in feed blocks at the levels of 2-6%, as in U.S. Pat. No. 4,735,809. In one study, spent bleaching clay, specifically bentonite, was incorporated into poultry feed pellets and the researchers found that “[u]p to 7.5% spent clay could be included successfully in the diet with no deleterious effects.” Blair, R. et al., Poultry Science, 1986 Vol. 65, pp. 2281-2291.
  • a further object of the invention is to provide a method for large scale disposal of spent bleaching earth that avoids the existing problems and concerns.
  • a further object of the invention is to provide a method for disposing of spent bleaching earth where the spent bleaching earth can be profitably reused for another application.
  • a further object of the invention is to provide a method for disposing of spent bleaching earth that uses the spent bleaching earth to create salt lick blocks and pellets.
  • a further object of this invention is to incorporate spent bleaching earth in salt lick blocks or pellets at weight percentages as high as 35%.
  • the present invention provides a novel method for disposing of spent bleaching earth that is economically beneficial and avoids the problems typically associated with its disposal.
  • the present invention prevents spontaneous combustion of the spent bleaching earth beyond the 24-hour safe period to provide more time for economic utilization in a stable product.
  • spontaneous combustion can be eliminated.
  • the material can then be transported in solid form to a production facility for use as a nutritious ingredient in making salt and mineral lick blocks or pellets for livestock.
  • other additives may also be included in the mixture.
  • the spent bleaching earth is safely disposed of by mixing it with a salt component to prevent spontaneous combustion and simultaneously or subsequently mixing it with a binding agent composition to form the mixture for animal lick blocks or pellets.
  • the spent bleaching earth is present in the nutritional supplement formulation between about 10-35 wt %, salt component is present between about 50-85 wt %, the binding agent composition is present between about 5-15%, and the mixture contains a minimal amount of water so that it can be poured into molds.
  • the nutritional supplement formulation may contain additional ingredients to support animal nutrition and health needs by taking advantage of the preservative attributes of edible salt.
  • FIG. 1 is a flowchart demonstrating one of the invention methods for utilizing spent edible oil bleaching earth.
  • FIG. 2 is a flowchart demonstrating one of the invention methods for utilizing spent edible oil bleaching earth.
  • FIG. 3 is a flowchart demonstrating an invention method for production of salt and mineral lick blocks enhanced with edible oil contained in spent bleaching clay.
  • the term “about,” as used herein, refers to variation in the numerical quantity that can occur, for example, through typical measuring and liquid handling procedures used for making concentrates or use solutions in the real world; through inadvertent error in these procedures; through differences in the manufacture, source, or purity of the ingredients used to make the compositions or carry out the methods; and the like.
  • the term “about” also encompasses amounts that differ due to different equilibrium conditions for a composition resulting from a particular initial mixture. Whether or not modified by the term “about”, the claims include equivalents to the quantities.
  • weight percent refers to the concentration of a substance as the weight of that substance divided by the total weight of the composition and multiplied by 100. It is understood that, as used here, “percent,” “%,” and the like are intended to be synonymous with “weight percent,” “wt-%,” etc.
  • spent bleaching earth refers to spent bleaching earth resulting from the production of edible vegetable oil, i.e., oils used chiefly in foodstuffs.
  • preferred spent bleaching earth are: attapulgite, bentonite, montmorillonite, Na-montmorillonite, Ca-montmorillonite, Na-bentonite, Ca-bentonite, beidellite, nontronite, saponite, hectorite, and combinations thereof.
  • Typical attributes of edible oil bleaching earth are presented in Table 1.
  • salt refers to edible salts, which can serve as nutrient sources.
  • suitable examples of salts include the alkaline earth metal salts (e.g., calcium chloride and magnesium chloride), alkali earth metal salts (e.g., sodium chloride, sodium sulfate, and potassium chloride), copper salts, cobalt salts, chromium salts, selenium salts, manganese salts, and iron salts.
  • brine refers to salt dissolved in water at between about 10 wt % and 50 wt %, preferably between about 10 wt % and 30 wt %, more preferably between about 20 wt % and 30 wt %, most preferably about 24%.
  • the amount and nature of impurities in brine can vary from about 100 to 6,000 ppm. Examples of common impurities are aluminum, iron, magnesium, and sodium compounds.
  • binding agent refers to a material used to solidify the mixture of spent bleaching earth and salt or brine.
  • a binding agent including a mineral component is preferred.
  • suitable binding agents containing a mineral component include Portland cement, particularly Type I/II.
  • Portland cement is commonly used as the binding agent in lick blocks containing soy protein meal and other nutritional ingredients. Methods of making Portland cement and places for purchasing Portland cement are well-known by those skilled in the art. Portland cement contains significant amounts of calcium, which provides nutritional benefits to the animals.
  • the mineralogical composition of Type I/II Portland cement is presented in Table 2. Water may be added to the binding agent composition, as necessary, so that the mixture of spent bleaching earth, salt component, and binding agent may be poured into molds.
  • Type I/II Portland Cement Compound Chemical Percent by weight Name Formula Range Average Tricalcium Silicate Ca 3 SiO 5 50-70 60 Dicalcium Silicate Ca 2 SiO 4 10-30 20 Tricalcium Aluminate Ca 3 Al 2 O 6 3-13 6 Tetracalcium Aluminoferrite Ca 4 Al 2 Fe 2 O 10 5-15 8 Calcium Sulfate CaSO 4 •2H 2 O 3-7 5 Anhydrous Calcium Sulfate CaSO 4 0.2-2.0 1 Source: H. G. van Oss, 2005, “Background Facts and Issues Concerning Cement and Concrete Data, U.S. Geological Survey Open-File Report 2005-1152: Version 1.2”, available at http://pubs.usgs.gov/of/2005/1152/2005-1152.pdf
  • the animal feed supplement mixture may also include other optional ingredients.
  • other edible fats may be added to the mixture.
  • Optional edible fat sources include, but are not limited to, fatty acids (e.g., stearic, palmitic, oleic, linoleic, and lauric acid), complex lipids (e.g., phospholipids).
  • Sources of edible fats may include, but are not limited to, coconut oil, corn oil, cottonseed oil, fish oil, olive oil, palm oil, sesame oil, soybean oil, canola oil, sunflower seed oil, tallow, greases, beef fat, restaurant fats, and mixtures thereof.
  • feedstuffs may be added to the mixture, including but not limited to, cottonseed meal, soy bean meal, mill run, lupins, molasses, dunder, other molasses byproducts (dried); grains, cereals, legumes, straw, hay, soy flakes, dried alfalfa, soy meal, wheat middlings, corn; barley meal, blood meal, dried buttermilk, linseed meal, meat and bone meal, peanut meal, rice meal, and sunflower meal.
  • dietary nitrogen may be included in the mixture.
  • Optional dietary nitrogen sources include, but are not limited to, ammonia, ammonium polyphosphate, animal protein products, oilseed meals, synthetic amino acids, and urea.
  • vitamins include, but are not limited to, vitamins A, E, K, and the B group vitamins.
  • trace minerals and elements may be added to the mixture.
  • trace minerals and elements include, but are not limited to, cobalt sulfate, copper sulfate, ferrous sulfate, ferrous oxide, iodines, manganese sulfate, potassium iodate, selenium and its compounds, sulphur, zinc oxide, and zinc sulfate, etc.
  • various drugs, medicaments, insecticides, enzymes, antimicrobials, probiotics and the like may be added to the mixture.
  • water may be added to the mixture, as necessary, so that the mixture may be poured into molds.
  • optional emulsifying agents to stabilize the composition and prevent separation of the mixture, particularly of the fat ingredient(s).
  • emulsifying agents are colloidal clay gellants, such as, attapulgite, bentonite, and sepiolite.
  • colloidal clay gellants such as, attapulgite, bentonite, and sepiolite.
  • a mixture is prepared of spent bleaching earth, containing about 30-50 wt % oil, and a salt component.
  • the spent bleaching earth may be present at about 10-35 wt %, preferably about 20-35 wt %, more preferably about 35 wt %.
  • the salt component is present at about 5-85 wt %, preferably 50-85 wt %, and more preferably about 50 wt %.
  • the mixture of spent bleaching earth and salt component is then mixed with a binding agent.
  • the binding agent may be present at about 5-15 wt %, preferably about 15 wt %.
  • the binding agent includes a mineral component.
  • the binding agent is Type I/II Portland cement.
  • Any suitable mixer can be used to combine and thoroughly mix the ingredients.
  • suitable mixers include, but are not limited to, variable-speed shop drill motors with a mixer bit, paddle-mixers, etc.
  • One of skill in the art will be familiar with various mixers and can select an appropriate mixer for their particular production needs.
  • Once thoroughly mixed the mixture is transferred to a mold with the desired size and shape. The mixture should be allowed to set until it has hardened. One of skill in the art will recognize how long the mixture must set to harden.
  • the methods, products, and compositions of the invention may be followed to provide nutritional supplements in the form of pellets and lick blocks.
  • One of skill in the art may produce pelletized nutritional supplements following the disclosure herein and using pelletizing techniques well-known in the art.
  • Lick blocks are preferred because they provide free-choice feeding to the animals on a self-demand basis and reduce labor and expenses resulting from rationing and mixing granular materials in the animal feed.
  • lick blocks can be weather resistant, which removes the need to provide sheltered feeding locations. The lick blocks are also easily transported from one location to another without the risk of spilling.
  • the lipid content in the spent bleaching clay has health benfits for the livestock.
  • livestock producers have leased pasture land to edible oil processors for disposal of spent bleaching earth, it has been observed that cattle immediately lick on any small quantities spilled. There is no question that livestock will not be attracted to and nutritionally benefit from this incorporation of spent bleaching earth in salt and mineral lick blocks or pellets.
  • Spent bleaching earth was disposed of according to the methods disclosed herein and animal nutritional supplements were produced. Four illustrative examples are discussed below. These examples are not to be deemed exclusive embodiments of the methods for disposing of spent bleaching earth, methods of producing the animal nutritional supplements, or compositions of animal nutritional supplement, disclosed herein.
  • Two animal lick block samples were prepared—a 1.573 liter rectangular-shaped block and a 4.732 liter bell-shaped block.
  • a blend of attapulgite and bentonite spent bleaching earth from edible oil processing was obtained and combined with salt, Portland cement Type I/II, and water. The proportions combined were: 10 wt % spent bleaching earth, 85 wt % salt, 5 wt % Portland cement Type I/II, and 300 mL of water for the 1.573 liter block and 900 mL of water for the 4.732 liter block.
  • a variable-speed shop drill motor with a mixer bit was used to thoroughly mix the ingredients. After thorough mixing, each mixture was transferred to a lick block mold.
  • the mixtures had the color and consistency of concrete or mortar.
  • the mixtures were allowed to set overnight in the molds. After setting overnight, the mixtures hardened and white salt crystals dominated their appearance.
  • the 4.732 liter block was cured for ten days.
  • the 1.573 liter block was cured for one week.
  • the temperature of the blocks was monitored with a non-contact infrared thermometer.
  • the blocks exhibited stable temperatures over the curing period.
  • the lick blocks were off-white in color and had typical attributes of a salt lick block.
  • the blocks were firm and structurally stable.
  • the 4.732 liter lick block was provided to a cattle producer for consumption by a herd of cattle.
  • the block was placed in an outdoor serving dish and observed by personnel onsite.
  • the 4.732 liter lick block exhibited no abnormal or deleterious characteristics.
  • the 1.573 liter block was retained for longer observation.
  • the 1.573 liter lick block exhibited no abnormal or deleterious characteristics.
  • two animal lick block samples were prepared—a 1.573 liter rectangular-shaped block and a 4.732 liter bell-shaped block.
  • a blend of attapulgite and bentonite spent bleaching earth from edible oil processing was obtained and combined with salt, Portland cement Type I/II, and water. The proportions combined were: 15 wt % spent bleaching earth, 75 wt % salt, 10 wt % Portland cement Type I/II, and 300 mL of water for the 1.573 liter block and 900 mL of water for the 4.732 liter block.
  • a variable-speed shop drill motor with a mixer bit was used to thoroughly mix the ingredients. After thorough mixing, each mixture was transferred to a lick block mold.
  • the mixtures had the color and consistency of concrete or mortar.
  • the mixtures were allowed to set overnight in the molds. After setting overnight, the mixtures hardened and white salt crystals dominated their appearance.
  • the 4.732 liter block was cured for ten days.
  • the 1.573 liter block was cured for one week.
  • the temperature of the blocks was monitored with a non-contact infrared thermometer.
  • the blocks exhibited stable temperatures over the curing period.
  • the lick blocks were off-white in color and had typical attributes of a salt lick block.
  • the blocks were firm and structurally stable.
  • the 4.732 liter lick block was provided to a cattle producer for consumption by a herd of cattle.
  • the block was placed in an outdoor serving dish and observed by personnel onsite.
  • the 4.732 liter lick block exhibited no abnormal or deleterious characteristics.
  • the 1.573 liter block was retained for longer observation.
  • the 1.573 liter lick block exhibited no abnormal or deleterious characteristics.
  • two animal lick block samples were prepared—a 1.573 liter rectangular-shaped block and a 4.732 liter bell-shaped block.
  • a blend of attapulgite and bentonite spent bleaching earth from edible oil processing was obtained and combined with salt, Portland cement Type I/II, and water. The proportions combined were: 20 wt % spent bleaching earth, 65 wt % salt, 15 wt % Portland cement Type I/II, and 300 mL of water for the 1.573 liter block and 900 mL of water for the 4.732 liter block.
  • a variable-speed shop drill motor with a mixer bit was used to thoroughly mix the ingredients. After thorough mixing, each mixture was transferred to a lick block mold.
  • the mixtures had the color and consistency of concrete or mortar.
  • the mixtures were allowed to set overnight in the molds. After setting overnight, the mixtures hardened and white salt crystals dominated their appearance.
  • the 4.732 liter block was cured for ten days.
  • the 1.573 liter block was cured for one week.
  • the temperature of the blocks was monitored with a non-contact infrared thermometer.
  • the blocks exhibited stable temperatures over the curing period.
  • the lick blocks were off-white in color and had typical attributes of a salt lick block.
  • the blocks were firm and structurally stable.
  • the 4.732 liter lick block was provided to a cattle producer for consumption by a herd of cattle.
  • the block was placed in an outdoor serving dish and observed by personnel onsite.
  • the 4.732 liter lick block exhibited no abnormal or deleterious characteristics.
  • the 1.573 liter block was retained for longer observation.
  • the 1.573 liter lick block exhibited no abnormal or deleterious characteristics.
  • two animal lick block samples were prepared—a 1.573 liter rectangular-shaped block and a 4.732 liter bell-shaped block.
  • a blend of attapulgite and bentonite spent bleaching earth from edible oil processing was obtained and combined with salt, Portland cement Type I/II, and water. The proportions combined were: 35 wt % spent bleaching earth, 50 wt % salt, 15 wt % Portland cement Type I/II, and 350 mL of water for the 1.573 liter block and 1050 mL of water for the 4.732 liter block.
  • a variable-speed shop drill motor with a mixer bit was used to thoroughly mix the ingredients. After thorough mixing, each mixture was transferred to a lick block mold.
  • the mixtures had the color and consistency of concrete or mortar.
  • the mixtures were allowed to set overnight in the molds. After setting overnight, the mixtures hardened and white salt crystals dominated their appearance.
  • the 4.732 liter block was cured for ten days.
  • the 1.573 liter block was cured for one week.
  • the temperature of the blocks was monitored with a non-contact infrared thermometer.
  • the blocks exhibited stable temperatures over the curing period.
  • the lick blocks were off-white in color and had typical attributes of a salt lick block.
  • the blocks were firm and structurally stable.
  • the 4.732 liter lick block was provided to a cattle producer for consumption by a herd of cattle.
  • the block was placed in an outdoor serving dish and observed by personnel onsite.
  • the 4.732 liter lick block exhibited no abnormal or deleterious characteristics.
  • the 1.573 liter block was retained for longer observation.
  • the 1.573 liter lick block exhibited no abnormal or deleterious characteristics.

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  • Polymers & Plastics (AREA)
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HUE030440T2 (en) 2011-10-04 2017-05-29 Norman J Smallwood Use of used bleaching earth for processing of edible oil into feed for farmed animals consisting of salt and blended or pelleted feed containing mineral components
US10167493B2 (en) * 2013-05-17 2019-01-01 Direvo Industrial Biotechnology Gmbh Methods for producing carotenoids from fermentation by-products
KR20170128417A (ko) * 2015-03-06 2017-11-22 노먼 제이. 스몰우드 가금류 및 가축 사료 생성물을 포뮬레이션하는데 식용-오일-가공 폐 표백토의 용도
AU2016229164B2 (en) * 2015-03-06 2018-06-07 Norman J. SMALLWOOD Addition of edible fat (lipids) to hay for enhancing the nutritional value and digestibility
GB201602429D0 (en) * 2016-02-11 2016-03-30 Harvey Water Softeners Ltd A compressed salt block for a liquid treatment apparatus
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US11992822B2 (en) 2021-07-19 2024-05-28 Active Minerals International, Llc Thermally activated bleaching clay product for oil bleaching
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MY163888A (en) 2017-11-15
DK2763550T3 (en) 2016-10-17
MX350503B (es) 2017-09-07
CN108271928A (zh) 2018-07-13
WO2013052357A2 (en) 2013-04-11
HUE030440T2 (en) 2017-05-29
EP2763550A2 (en) 2014-08-13
KR101734983B1 (ko) 2017-05-12
KR20140072175A (ko) 2014-06-12
CA2851074A1 (en) 2013-04-11
EP2763550B1 (en) 2016-07-13
BR112014008247A2 (pt) 2017-04-25
NZ622700A (en) 2015-11-27
MX2014003967A (es) 2014-05-22
US10624367B2 (en) 2020-04-21
US20180049450A1 (en) 2018-02-22
AU2012318917B2 (en) 2014-12-11
AU2012318917A1 (en) 2014-05-01
WO2013052357A3 (en) 2013-06-06
SI2763550T1 (sl) 2017-01-31
PT2763550T (pt) 2016-09-05
HRP20161229T1 (hr) 2016-11-04
EP2763550A4 (en) 2015-04-15
CO7020929A2 (es) 2014-08-11
US20140356483A1 (en) 2014-12-04
CA2851074C (en) 2017-01-17
PL2763550T3 (pl) 2017-01-31
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LT2763550T (lt) 2016-11-10
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